Veena Padmanaban Profile
Veena Padmanaban

@VeenaPadmanaban

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Hope Funds Fellow #TavazoieLab @RockefellerUniv | PhD #EwaldLab @HopkinsMedicine | Scientist by day, mom by night (&day) | Decoding breast cancer metastasis |

New York, NY
Joined December 2012
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@VeenaPadmanaban
Veena Padmanaban
1 month
🚨❗️🚨 New Paper Alert My postdoctoral work now out in @Nature . We find that sensory neurons drive breast cancer metastasis via an activity-dependent paracrine signalling mechanism mediated by substance-P, extracellular ssRNA & TLR7 receptor. (1/11) $ 🧵👇🏾
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@VeenaPadmanaban
Veena Padmanaban
1 month
What causes metastatic tumors to be more innervated? We discovered an unexpected role for the tumor endothelium: SLIT2, an axon guidance cue released by endothelial cells of metastatic tumors drives innervation. Builds nicely off previous work from our lab (Nature, 2020). (3/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
Breast tumors don’t show evidence of perineural invasion, a prognostic factor in other cancers. Yet mammary glands are very innervated. We find breast tumors are frequently innervated by sensory neurons and extent of tumor innervation correlates with metastatic capacity (2/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
Excitingly, this neuro-cancer axis is targetable! An approved anti-nausea drug, aprepitant is a TACR1 antagonist that significantly impairs tumor growth and metastasis across models. Prospective studies are required to test its clinical efficacy as an anti-metastatic drug (8/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
Cancer cells hyper-activate neurons to promote release of substance-P (SP) and drive metastasis. Loss of host-derived SP significantly inhibits metastasis. (5/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
In 3D organotypic co-cultures, sensory neurons drive tumor growth, invasion, and colony formation. For the first time, we also show a requirement for sensory innervation in breast cancer metastasis in vivo. (4/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
Very grateful to @SohailTavazoie for his great mentorship & support in letting me pursue this new line of work, fantastic students @IsabelKel and @ESeltzr , @benostendorf for computational expertise, @theNCI & @HopeFunds1 for their generous support (10/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
Hope to share more exciting discoveries in the #cancerneuroscience space soon in the “Padmanaban Lab” 🤞🏽 stay tuned! (11/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
Cancer cell derived ssRNAs then activate tumoral TLR7 receptors in a non-canonical, MyD88-independent, immune-independent, PI3K-dependent manner to drive breast cancer metastasis. This TLR7 gene signature associates with poor survival in breast cancer patients. (7/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
An unexpected twist: SP promotes release of ssRNAs from cancer cells and promote metastasis in an RNA-dependent manner. This RNA is coming from a small fraction of apoptotic cells that overexpress SP’s receptor, TACR1. A case of altruistic suicide! (6/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
This work complements findings from from Brian Davis, @UdeMTalbotlab , Moran Amit, @MadeleineOudin and others revealing how sensory innervation can regulate tumor progression across multiple peripheral cancers through cancer cell-autonomous or non-autonomous effects. (9/11)
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@VeenaPadmanaban
Veena Padmanaban
1 month
@Ella_Maru @Nature Thank you! This could be worth exploring in tumors innervated by sensory nerves (seen in PDAC, head and neck, colon, and several more).
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@VeenaPadmanaban
Veena Padmanaban
1 month
@sid_ereal @Nature Great point, thanks. We have not yet looked into what causes apoptosis downstream of TACR1 overexpression..
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